PDF malware analysis — malicious · 374b5e9f5b6e045f

MALICIOUS

PDF

35.7 KB Created: 2021-07-04 10:13:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27

MD5: 773c9fe3568748aa0a829bc7e70d9c6a SHA-1: 40d3893a149ef73d0bd96927b2c65f09af8469b5 SHA-256: 374b5e9f5b6e045f1c63ddd4741c82ba67f31e5af27fe1c8c45f00cb22ea48b9

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites that offer 'free generators', 'hacks', and 'spins' for popular games, which is a common lure for malicious content. The heuristic firings indicate that these links lead to known malicious redirector infrastructure. While no scripts were explicitly extracted, the nature of PDF exploits often involves embedded JavaScript to facilitate redirection or payload delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE

PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL http://netcdn.tw/app/406889139/coin-master-free-spins-and-coins-daily-links-game-hack In PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/roblox-robort-free_GM431946152.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/minecraft-windows-10-edition-free_GM479516143.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/can-pokemon-go-free-pokeballs_GM1094591345.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/roblox-free-script-executors_GM431946152.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/free-minecraft-codes_GM479516143.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/coinmaster-spin-ml_GM406889139.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/i-want-free-robux_GM431946152.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/moonactive-free-spins_GM406889139.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/free-robux-without-offers_GM431946152.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/manucraft-roblox-hacker_GM431946152.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/how-to-hack-strucid-roblox_GM431946152.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/robloxcom-without-download-free-game_GM431946152.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/how-to-get-1-000-000-robux-free_GM431946152.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/tiktok-free-view-iphone-horizontally_GM835599320.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/como-ponerse-hacks-en-roblox-para-windows-7_GM431946152.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_002_off000033de.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x33DE	22712 bytes
SHA-256: `dee796b92b2b3ee1beb70f460bdb83229ce26f18dd24cf54208b5003c1d6413a`
`font_01_sfnt_off000066e7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x66E7	18940 bytes
SHA-256: `c0dcd974f4fe980c6a922a1d67dca4592269afdacb350ab691b189b4ca5ba35f`

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